Stadium: Court 11 Round: 54
| ITF Women Fukuoka Qual | 2017/05/07 06:50 | Chihiro Takayama v Yukina Saigo | 6-3,5-7,4-6 |
| ITF Women Kurume Qual | 2018/05/14 01:00 | Yukina Saigo v Sakura Hondo | 3-6,6-4,5-7 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Moyuka Uchijima v Yukina Saigo | 6-1,3-6,1-6 |
| ITF Women Fukuoka Qual | 2018/05/07 03:55 | Yukina Saigo v Erina Hayashi | 4-6,5-7 |
| ITF Women Fukuoka Qual | 2018/05/06 04:30 | Yukina Saigo v Nagisa Imamura | 7-5,6-4 |
| ITF Women Osaka Qual | 2018/04/09 03:05 | Ya-Hsuan Lee v Yukina Saigo | 6-2,6-2 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Haruna Arakawa v Yukina Saigo | 5-7,3-6 |
| ITF Women Osaka Qual | 2018/04/08 01:00 | Yukina Saigo v Alina Silich | 7-6,6-4 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Karin Terami v Yukina Saigo | 6-1,0-6,6-4 |
| ITF Women Kurume Qual | 2018/05/14 02:30 | Ari Matsumoto v Chihiro Takayama | 1-6,6-3,6-2 |
| ITF Women Kurume Qual | 2018/05/13 09:35 | Chihiro Takayama v Tori Kinard | 2-6,7-5,6-3 |
| ITF Women Fukuoka Qual | 2018/05/06 02:20 | Aiko Yoshitomi v Chihiro Takayama | 6-2,6-3 |
| ITF Women Osaka Qual | 2018/04/07 05:30 | Chihiro Takayama v Ayumi Miyamoto | 2-6,4-6 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Ksenia Lykina v Chihiro Takayama | 7-6,6-3 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | So-Ra Lee v Chihiro Takayama | 6-3,7-5 |
| ITF Women Nishi-Tama | 2018/03/18 01:00 | Utaka Kishigami v Chihiro Takayama | 2-6,4-6 |
| ITF Women Nishi-Tama | 2018/03/17 01:00 | Suzuka Furukawa v Chihiro Takayama | 4-6,2-6 |